31949065219 has 2 divisors, whose sum is σ = 31949065220. Its totient is φ = 31949065218.

The previous prime is 31949065207. The next prime is 31949065237. The reversal of 31949065219 is 91256094913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31949065219 - 2¹³ = 31949057027 is a prime.

It is a super-2 number, since 2×31949065219² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31949065259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15974532609 + 15974532610.

It is an arithmetic number, because the mean of its divisors is an integer number (15974532610).

Almost surely, 2^31949065219 is an apocalyptic number.

31949065219 is a deficient number, since it is larger than the sum of its proper divisors (1).

31949065219 is an equidigital number, since it uses as much as digits as its factorization.

31949065219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 31949065219 in words is "thirty-one billion, nine hundred forty-nine million, sixty-five thousand, two hundred nineteen".